[PATCH 2/3] kvm: qemu: handle link status in qemu_sendv_packet()

[Mark McLoughlin]

Signed-off-by: Mark McLoughlin <[EMAIL PROTECTED]>
---
 qemu/net.c |   18 +++++++++++++++++-
 1 files changed, 17 insertions(+), 1 deletions(-)

diff --git a/qemu/net.c b/qemu/net.c
index 16a0990..f23a17f 100644
--- a/qemu/net.c
+++ b/qemu/net.c
@@ -400,6 +400,17 @@ static ssize_t vc_sendv_compat(VLANClientState *vc, const 
struct iovec *iov,
     return offset;
 }
 
+static ssize_t calc_iov_length(const struct iovec *iov, int iovcnt)
+{
+    size_t offset = 0;
+    int i;
+
+    for (i = 0; i < iovcnt; i++)
+       offset += iov[i].iov_len;
+
+    return offset;
+}
+
 ssize_t qemu_sendv_packet(VLANClientState *vc1, const struct iovec *iov,
                          int iovcnt)
 {
@@ -407,13 +418,18 @@ ssize_t qemu_sendv_packet(VLANClientState *vc1, const 
struct iovec *iov,
     VLANClientState *vc;
     ssize_t max_len = 0;
 
+    if (vc1->link_down)
+       return calc_iov_length(iov, iovcnt);
+
     for (vc = vlan->first_client; vc != NULL; vc = vc->next) {
        ssize_t len = 0;
 
        if (vc == vc1)
            continue;
 
-       if (vc->fd_readv)
+       if (vc->link_down)
+           len = calc_iov_length(iov, iovcnt);
+       else if (vc->fd_readv)
            len = vc->fd_readv(vc->opaque, iov, iovcnt);
        else if (vc->fd_read)
            len = vc_sendv_compat(vc, iov, iovcnt);
-- 
1.5.4.3

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